Judge who granted temporary permit accused of 'bias' over husband's alleged financial links to ride-hailing firm. : Judge who granted temporary permit accused of ‘bias’ over husband’s alleged financial links to ride-hailing firm  Black cab drivers have lost a High Court challenge against Uber's London operating licence, after senior judges rejected their claims of bias. The United Cabbies Group Ltd (UCG), which represents Hackney carriage drivers in the capital, claimed Chief Magistrate Emma Arbuthnot's decision to grant Uber a 15-month permit was “tainted by actual or apparent bias”.